Speaker and electronic equipment

Abstract

The present application discloses a loudspeaker and an electronic device, comprising: a first shell, on which a sound outlet channel is provided; a second shell, which is connected to the first shell to form a first cavity; a loudspeaker core, which is arranged in the first cavity, and after the loudspeaker core is connected to the first shell, the first cavity is divided into a front cavity and a rear cavity, wherein the front cavity is connected to the sound outlet channel, and the rear cavity is a sealed cavity; wherein the raw material components of the first shell and the second shell include: 50-90wt% of a polymer composite material, and 10-50wt% of a hollow sphere material. By adding 10-50wt% of the hollow sphere material to the raw material components of the first shell and the second shell, the density of the first shell and the second shell can be reduced, thereby reducing the weight of the first shell and the second shell.

Description

[0001] This application is a divisional application. The application number of the original application is 202210914268.0, and the original application date is August 1, 2022. The entire contents of the original application are incorporated into this application by reference. Technical Field

[0002] The present application belongs to the technical field of electronic equipment, and in particular, relates to a speaker and an electronic equipment. Background Art

[0003] At present, electronic devices such as personal computers, tablets, and mobile phones all have a sound playback function, wherein the device used to realize the sound playback function is a speaker. Generally, a speaker is composed of a shell and a speaker core, wherein the speaker core is the core component for forming the external sound, and the shell is used to provide a sound cavity for the speaker core to achieve corresponding acoustic performance. The shell of the speaker is formed by welding two parts of the shell.

[0004] The shell material of the speaker is usually made of plastic particles. At present, in order to meet good welding performance, the plastic particles are made of a polymer composite material composed of PC (polycarbonate) and glass fiber. However, the density of the plastic particles formed by this polymer composite material is relatively high, making the mass of the prepared shell heavier.

[0005] Therefore, the shell material prepared by the polymer composite material composed of PC (polycarbonate) and glass fiber cannot meet the current demand for weight reduction of electronic equipment. Summary of the invention

[0006] In order to solve the problem that the shell material in the prior art cannot meet the current demand for weight reduction of electronic equipment, the present application provides a speaker and an electronic device.

[0007] In the first aspect, the present application provides a speaker, comprising: a first shell, on which a sound outlet channel is provided; a second shell, which is snap-fitted and connected to the first shell to form a first cavity; a speaker core, which is arranged in the first cavity, and after the speaker core is connected to the first shell, the first cavity is divided into a front cavity and a rear cavity, wherein the front cavity is connected to the sound outlet channel, and the rear cavity is a sealed cavity; wherein the raw material components of the first shell and the second shell, in terms of mass percentage, include: 50-90wt% of a polymer composite material, and 10-50wt% of a hollow sphere material.

[0008] Thus, adding 10-50wt% of hollow sphere material to the raw material components of the first shell and the second shell can reduce the density of the first shell and the second shell, thereby reducing the weight of the first shell and the second shell.

[0009] In one feasible embodiment, welding ribs are provided on the second shell, and the welding ribs form surface contact with the first shell during welding; when the second shell is subjected to high-frequency vibration, the welding ribs and the first shell are used to rub against each other at the contact surface to generate heat, so that the first shell and the second shell are welded together.

[0010] In this way, by changing the shape of the welding ribs, the contact area between the welding ribs and the first shell is increased, so that during the welding process, greater energy can be generated to ensure the reliability of welding. Therefore, the present application can be compatible with the different characteristics of a variety of polymer materials, such as crystalline polymer materials and semi-crystalline polymer materials, so that the speaker provided in the embodiment of the present application can not only meet the reduction requirements of the speaker, but also ensure the reliability of welding.

[0011] In one possible implementation, the cross-section of the welding rib is trapezoidal, rectangular or W-shaped.

[0012] In this way, by changing the shape of the welding rib, the contact area between the welding rib and the first shell is increased, so that during the welding process, greater energy can be generated to ensure the reliability of welding.

[0013] In one achievable manner, the outer surface of the welding rib is roughened.

[0014] In this way, the outer surface of the welding rib is roughened to increase the roughness of the outer surface of the welding rib. In this way, the welding rib with increased surface roughness is more conducive to heat welding with the first shell through mutual friction. The present application does not limit the method of surface roughening. For example, a concave-convex texture can be set on the outer surface of the welding rib; for another example, concave-convex particles can be set on the outer surface of the welding rib.

[0015] In one achievable manner, a glue overflow groove is provided on the second shell along the periphery of the welding rib, and the glue overflow groove is used to accommodate the molten material overflowing after the welding rib is melted.

[0016] In this way, the molten material formed after the welding ribs are melted will overflow into the glue overflow groove, thereby solving the problem of molten material overflowing due to the increase in the interference volume of the welding ribs, which affects the appearance of the second shell.

[0017] In an achievable manner, the polymer composite material includes 80-100 wt % of polymer material and 0-20 wt % of fiber material.

[0018] In this way, the polymer material has excellent performance in mechanical properties, insulation properties, thermal insulation properties, etc. The fiber material can enhance the strength of the first shell. Therefore, the polymer composite material formed by the polymer material and the fiber material can ensure that the prepared first shell and the second shell have good physical properties.

[0019] In one achievable manner, the polymer material is selected from at least one of PA, PC, ABS, and PET, and the fiber material is selected from at least one of glass fiber, aramid fiber, carbon fiber, silicon carbide, and carbon nanotube.

[0020] In an achievable manner, raw material components of the first shell and the second shell include: 77 wt % PA, 3 wt % glass fiber, and 20 wt % hollow sphere material.

[0021] In an achievable manner, raw material components of the first shell and the second shell include: 40 wt % PA, 10 wt % glass fiber, and 50 wt % hollow sphere material.

[0022] In one possible implementation, the raw material components of the first shell and the second shell include: 81wt% PA, 9wt% glass fiber, and 10wt% hollow sphere material. In one possible implementation, the particle size of the hollow sphere material is 2-130μm, and the density is 0.2-0.6g / cm 3 .

[0023] In one achievable manner, the hollow sphere material is selected from at least one of silicon dioxide, aluminum oxide, zirconium oxide, titanium dioxide, ferroferric oxide, zinc oxide, carbon nanotubes, graphene, low carbon steel, 316 stainless steel, 304 stainless steel, pure iron, and polystyrene.

[0024] In a second aspect, the present application further provides an electronic device, comprising a speaker as described in any one of the first aspects.

[0025] Thus, the electronic device using the speaker provided by the present application can reduce the weight by 7% compared with the electronic device in the prior art.

[0026] In summary, the present application provides a speaker and electronic device, in order to meet the weight reduction demand, adding 10-50wt% hollow sphere material to the raw material components of the first shell and the second shell, so that the density of the first shell and the second shell can be reduced, thereby reducing the weight of the first shell and the second shell. In addition, in order to be compatible with the different characteristics of a variety of polymer materials, such as crystalline polymer materials and semi-crystalline polymer materials, the embodiment of the present application increases the contact area between the welding rib and the first shell by changing the shape of the welding rib. In this way, during the welding process, greater energy can be generated to ensure the reliability of welding. In other words, the speaker provided in the embodiment of the present application can not only meet the weight reduction demand of the speaker, but also ensure the reliability of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the overall structure of a speaker provided in an embodiment of the present application;

[0028] Figure 2 A schematic diagram of the exploded structure of a speaker provided in an embodiment of the present application;

[0029] Figure 3A A1-A1 sectional view of a speaker provided in an embodiment of the present application;

[0030] Figure 3B A2-A2 sectional view of a speaker provided in an embodiment of the present application;

[0031] Figure 4 A flowchart of a method for preparing a shell provided in an embodiment of the present application;

[0032] Figure 5A A schematic diagram of the structure of a second housing 200 provided in an embodiment of the present application;

[0033] Figure 5B A cross-sectional view of a second housing 200 provided in an embodiment of the present application;

[0034] Fig. 6A A schematic diagram of the structure of another second housing 200 provided in an embodiment of the present application;

[0035] Figure 6B A cross-sectional view of another second housing 200 provided in an embodiment of the present application;

[0036] Figure 6C for Figure 6B A partial enlarged view of the M in the middle.

[0037] Description of Reference Numerals

[0038] 100-first shell, 110-sound outlet channel, 120-protrusion, 200-second shell, 300-speaker core, 310-upper surface, 320-lower surface, 400-first cavity, 410-front cavity, 420-rear cavity, 510-welding rib, 520-welding rib, 600-overflow glue groove. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, other embodiments obtained by ordinary technicians in this field without making creative work all belong to the protection scope of the present application.

[0040] To facilitate understanding, the English abbreviations and related technical terms involved in the embodiments of the present application are explained and described below.

[0041] PA: English name Polyamide, Chinese name: polyamide, also known as nylon.

[0042] PC: English name Polycarbonate, Chinese name: polycarbonate.

[0043] ABS: English name Acrylonitrile Butadiene Styrene, Chinese name: Acrylonitrile-butadiene-styrene copolymer.

[0044] PET: English name Polyethylene terephthalate, Chinese name: polyethylene terephthalate, also known as polyester resin.

[0045] At present, electronic devices such as personal computers, tablets, and mobile phones all have a sound playback function, wherein the device used to realize the sound playback function is a speaker. Generally, a speaker is composed of a shell and a speaker core, wherein the speaker core is the core component for forming the external sound, and the shell is used to provide a sound cavity for the speaker core to achieve corresponding acoustic performance. The shell of the speaker is formed by welding two parts of the shell.

[0046] Figure 1 This is a schematic diagram of the overall structure of a speaker provided in an embodiment of the present application. Figure 2 This is a schematic diagram of the exploded structure of a speaker provided in an embodiment of the present application. Figure 1 and Figure 2 As shown, the speaker includes a first shell 100 , a second shell 200 and a speaker core 300 .

[0047] Figure 3AThis is a cross-sectional view of the speaker in the A1-A1 direction provided in an embodiment of the present application. Figure 3A As shown, after the first shell 100 and the second shell 200 are matched and connected, a first cavity 400 is formed. The speaker core 300 is located in the first cavity 400. The speaker core 300 includes an upper surface 310 facing the first shell 100 and a lower surface 320 facing the second shell. After the speaker core 300 and the first shell 100 are matched and connected, the first cavity 400 is divided into a front cavity 410 and a rear cavity 420. Among them, the upper surface 310 of the speaker core 300 is enclosed with the first shell 100 to form the front cavity 410; the first shell 100, the second shell 200 and the lower surface 320 and the side of the speaker core 300 are enclosed to form the rear cavity 420. Among them, the speaker core 300 and the first shell 100 can be sealed by dispensing glue, and the first shell 100 and the second shell 200 can be sealed and connected by welding.

[0048] Figure 3B This is a cross-sectional view of the speaker provided in the embodiment of the present application along the A2-A2 axis. Figure 3B As shown, the first housing 100 is provided with a protrusion 120 protruding in a direction away from the second housing 200, and a sound outlet channel 110 is provided on the side of the protrusion 120. The sound outlet channel 110 is connected to the front cavity 410, but not to the rear cavity 420. In this way, when the speaker core 300 is working, it can push the air in the front cavity 410 to vibrate, and the vibrating air in the front cavity 410 is discharged through the sound outlet channel 110 to form sound. Figure 3B The direction of the middle arrow is the sound output direction. The sound output channel 110 can be connected to the sound output hole on the frame of the electronic device, thereby further outputting the sound outside the electronic device to be received by the user.

[0049] In the embodiment of the present application, the rear cavity 420 is a sealed cavity. Since the sound waves generated by the upper surface 310 of the speaker core 300 are 180° different from the sound waves generated by the lower surface 320, if the rear cavity 420 is a non-sealed cavity, the sound waves generated by the upper surface 310 and the sound waves generated by the lower surface 320 will disappear due to phase difference interference. Therefore, the rear cavity 420 is designed as a sealed cavity to eliminate phase difference interference.

[0050] like Figure 3A As shown, the connection area between the first shell 100 and the second shell 200 is located in the rear cavity 420. To meet the above acoustic performance requirements, the rear cavity 420 is required to be a sealed cavity. Therefore, the present application requires that the connection area between the first shell 100 and the second shell 200 is a sealed connection to avoid sound leakage.

[0051] At present, in order to ensure reliable welding performance, the materials of the first housing 100 and the second housing 200 are polymer composite materials composed of PC (polycarbonate) and glass fiber. However, the density of plastic particles formed by this polymer composite material is relatively high, so that the mass of the prepared first housing 100 and the second housing 200 is relatively heavy. Therefore, it cannot meet the demand for weight reduction of electronic equipment.

[0052] To this end, an embodiment of the present application provides a speaker, which reduces the weight of the speaker formed by changing the raw material components of the first shell 100 and the second shell 200, thereby meeting the demand for weight reduction of electronic equipment.

[0053] The shell material provided in the embodiments of the present application is described below.

[0054] In the embodiment of the present application, the raw material components of the first shell 100 and the second shell 200 are the same. The raw material components of the shells are described below by taking the first shell 100 as an example.

[0055] In the embodiment of the present application, the raw material components of the first shell 100 include polymer composite materials and hollow sphere materials. Among the raw material components, the polymer composite materials account for 50-90wt% of the raw material components, and the hollow sphere materials account for 10-50wt% of the raw material components.

[0056] Among them, the values ​​of the above-mentioned components include upper limits, lower limits and any values ​​between the upper limits and lower limits. For example, the value of the polymer composite material is 50-90wt%, specifically including 50wt%, 90wt% and any values ​​between 50wt% and 90wt%, such as the value of the polymer composite material can be 60wt%, 65wt%, 70wt%, 75wt%, 80wt%, 85wt%, etc. For another example, the value of the hollow sphere material is 10-50wt%, specifically including 10wt%, 50wt% and any values ​​between 10wt% and 50wt%, such as the value of the hollow sphere material can be 15wt%, 20wt%, 25wt%, 30wt%, 35wt%, 40wt%, etc.

[0057] In the embodiment of the present application, hollow sphere material is added to the raw material components of the first shell 100 , which can reduce the density of the first shell 100 , thereby reducing the weight of the first shell 100 .

[0058] The polymer composite material in the embodiment of the present application can ensure that the raw material components have good processability and ensure the mechanical properties of the first shell 100, such as tensile strength, elongation at break, bending strength and bending modulus.

[0059] In the embodiment of the present application, the polymer composite material can be a composite material of a polymer material and a fiber material. The polymer material has excellent performance in mechanical properties, insulation properties, thermal insulation properties, etc. The fiber material can enhance the strength of the first shell 100.

[0060] In a specific embodiment, the mass percentage of the polymer material in the polymer composite material is 80-100wt%, and the mass percentage of the fiber material in the polymer composite material is 0-20wt%.

[0061] Among them, the values ​​of the above-mentioned components include upper limits, lower limits and any values ​​between the upper limits and lower limits. For example, the value of the polymer material is 80-100wt%, specifically including 80wt%, 100wt% and any values ​​between 80wt% and 100wt%, such as the value of the polymer material can be 85wt%, 90wt%, 95wt%, etc. For another example, the value of the fiber material is 0-20wt%, specifically including 0wt%, 20wt% and any values ​​between 0wt% and 20wt%, such as the value of the fiber material can be 0.5wt%, 5wt%, 10wt%, 15wt%, etc.

[0062] Optionally, the polymer material may be at least one of PA, PC, ABS, and PET.

[0063] Optionally, the fiber material may be at least one of glass fiber, aramid fiber, carbon fiber, silicon carbide, and carbon nanotube.

[0064] In the embodiment of the present application, hollow spherical materials are added to the raw material components to reduce the density of the first shell 100 and the second shell 200, thereby achieving the effect of reducing the weight of the speaker.

[0065] Optionally, the particle size of the hollow sphere material may be 2-130 μm, and the density may be 0.2-0.6 g / cm 3 .

[0066] The embodiment of the present application does not limit the selection of the hollow sphere material. The hollow sphere material can be any one or more of ceramic, carbon material, metal, and polymer materials.

[0067] Optionally, the hollow sphere material can be at least one of silicon dioxide, aluminum oxide, zirconium oxide, titanium dioxide, ferroferric oxide, zinc oxide, carbon nanotubes, graphene, low carbon steel, 316 stainless steel, 304 stainless steel, pure iron, and polystyrene.

[0068] It should be noted that in the embodiments of the present application, the particle sizes of the hollow sphere materials added to the raw material components can be the same or different. For example, the raw material components include two types of hollow sphere materials with different particle sizes, one type of hollow sphere material has a particle size of 2 μm, and the other type of hollow sphere material has a particle size of 10 μm. For another example, the raw material components include a type of hollow sphere material with a particle size of 13 μm.

[0069] It should also be noted that in the embodiments of the present application, the hollow sphere materials added to the raw material components can be the same or different. For example, the raw material components include three types of hollow sphere materials, the first type of hollow sphere material is silicon dioxide, the second type of hollow sphere material is carbon nanotubes, and the third type of hollow sphere material is low-carbon steel. For another example, the raw material components include one type of hollow sphere material, and the hollow sphere material is alumina.

[0070] Figure 4 A flowchart of a method for preparing a shell is provided for an embodiment of the present application. Figure 4 As shown, the embodiment of the present application provides a method for preparing a shell, which may include the following steps:

[0071] Step S1, preparing raw materials according to the following ratio, the raw material components include: 50-90wt% of polymer composite material, and 10-50wt% of hollow sphere material.

[0072] Step S2, after the above raw material components are evenly mixed, plastic particles are formed through a granulation process.

[0073] In step S3, the prepared plastic particles are used to prepare the first shell 100 and the second shell 200 respectively through an injection molding process or a compression molding process.

[0074] In summary, the embodiment of the present application also provides a method for preparing a shell, first weighing the raw material components provided in the embodiment of the present application according to the ratio, wherein the raw material components include: 50-90wt% of a polymer composite material, and 10-50wt% of a hollow sphere material. Then, after the above raw material components are evenly mixed, plastic particles are formed through a granulation process. Finally, the plastic particles prepared above are used to prepare the first shell 100 and the second shell 200 respectively through an injection molding process or a molding process. Of course, the above raw material components can also be evenly mixed, and then directly prepared by an injection molding process or a molding process to obtain the first shell 100 and the second shell 200 respectively, which is not limited in the present application.

[0075] The following are some examples of the mass percentages of the various raw material components provided in this application:

[0076] Embodiment 1: Based on mass percentage, the raw material components for preparing the first shell 100 and the second shell 200 include: 77wt% PA, 3wt% glass fiber, and 20wt% hollow sphere material.

[0077] Embodiment 2: Based on mass percentage, the raw material components for preparing the first shell 100 and the second shell 200 include: 40wt% PA, 10wt% glass fiber, and 50wt% hollow sphere material.

[0078] Embodiment 3: Based on mass percentage, the raw material components for preparing the first shell 100 and the second shell 200 include: 81wt% PA, 9wt% glass fiber, and 10wt% hollow sphere material.

[0079] In order to illustrate that the raw material components of the first shell 100 and the second shell 200 in the present application are conducive to reducing weight and have good physical properties such as tensile strength, elongation at break, bending strength and bending modulus, the applicant prepares the first shell 100 and the second shell 200 according to the composition ratios of each group shown in Example 1 to Example 3 in Table 1 and the comparative example, and according to the preparation method of the shell provided above. Since the raw material components of the first shell 100 and the second shell 200 are the same, the performance of the prepared first shell 100 and the second shell 200 is also the same. Therefore, the present application only performs performance tests on the prepared first shell 100. For the test results of the performance test on the first shell 100, please refer to Table 1.

[0080] Table 1 Performance test results of the first housing 100

[0081]

[0082] As shown in Table 1, the density of the first shell 100 prepared by using the raw material component distribution ratios in Examples 1 to 3 is less than the density of the first shell 100 prepared by using the raw material component distribution ratios in Comparative Example 1. That is to say, the embodiment of the present application can reduce the weight of the prepared first shell 100 by adding hollow sphere materials to the raw material components. Specifically, the first shell 100 prepared in Example 1 can reduce the weight by 27% relative to the first shell prepared in Comparative Example 1. For the electronic device as a whole, the first shell and the second shell prepared in Example 1 can reduce the weight by 7% relative to the first shell 100 and the second shell 200 prepared in Comparative Example 1.

[0083] Please continue to refer to Table 1. The first shell 100 prepared by using the raw material component ratios in Examples 1 to 3 has good physical properties such as tensile strength, elongation at break, bending strength and bending modulus. The first shell 100 prepared in this way can meet the application requirements in electronic devices.

[0084] like Figure 3A As shown, the connection area between the first shell 100 and the second shell 200 is located in the rear cavity 420. To meet the acoustic performance requirements, the rear cavity 420 is required to be a sealed cavity. Therefore, the present application requires that the connection area between the first shell 100 and the second shell 200 is a sealed connection to avoid sound leakage.

[0085] The implementation of this application does not limit the specific sealing connection method of the first shell 100 and the second shell 200. For example, the first shell 100 and the second shell 200 can be connected by ultrasonic welding, hot air welding, hot plate welding, etc. Taking ultrasonic welding as an example, ultrasonic welding refers to using high-frequency vibration energy to melt the material at the joint, and then using the melted material to cool and solidify again to achieve the purpose of connecting the first shell 100 and the second shell 200.

[0086] Figure 5A A schematic structural diagram of a second shell 200 provided in an embodiment of the present application.

[0087] Figure 5B A cross-sectional view of a second shell 200 provided in an embodiment of the present application.

[0088] like Figure 5A and Figure 5B As shown, in one possible implementation, when ultrasonic welding is used to connect the first shell 100 and the second shell 200, in order to enhance the welding strength, welding ribs 510 are pre-arranged on the first shell 100 or the second shell 200, so that the first shell 100 and the second shell 200 can be connected by melting the welding ribs. The welding ribs 510 can be arranged in the area of ​​the edge of the second shell 200 for connecting with the first shell 100, and are distributed in a closed annular shape around the edge of the second shell 200.

[0089] like Figure 5BAs shown, the cross section of the welding rib 510 is triangular, and the width of the cross section gradually decreases in the direction close to the first shell 100. In this way, when the first shell 100 and the second shell 200 are connected by the welding rib 510, the welding rib 510 on the second shell 200 is in contact and aligned with the corresponding connection position of the first shell 100. After contact and alignment, the welding rib 510 on the second shell 200 forms a line contact with the first shell 100. During the ultrasonic welding process, the second shell 200 is subjected to high-frequency vibration energy, and the welding rib 510 and the first shell 100 generate heat through mutual friction, so that the materials melt and are welded together.

[0090] It should be noted that the triangular structured welding ribs 510 are mainly suitable for the case where the raw material components include crystalline polymer materials, for example, the raw material components of the first shell 100 and the second shell 200 include PC. Since PC is a crystalline material, the energy required during the ultrasonic welding process is relatively small, so even if the triangular structured welding ribs 510 are used, the reliability of welding can be guaranteed.

[0091] However, if the raw material components of the first shell 100 and the second shell 200 include semi-crystalline polymer materials such as PA, since semi-crystalline polymer materials require more energy than crystalline polymer materials during ultrasonic welding, if the triangular structure welding ribs 510 are still used, since the triangular structure welding ribs 510 are in line contact with the first shell 100 and the contact area is small, welding cracks may occur, resulting in leakage problems.

[0092] In order to improve the problem of welding cracking that may occur after welding of semi-crystalline polymer materials, the present application makes further improvements to the structure of the welding rib 510.

[0093] Fig. 6A This is a schematic structural diagram of another second shell 200 provided in an embodiment of the present application.

[0094] Figure 6B A cross-sectional view of another second shell 200 provided in an embodiment of the present application.

[0095] like Fig. 6A and Figure 6B As shown, in another possible implementation, a circle of welding ribs 520 with a pyramidal structure is provided on the second shell 200 in an area for connecting with the first shell 100 .

[0096] like Figure 6BAs shown, the cross section of the welding rib 520 is a trapezoid, and the width of the cross section gradually decreases in the direction close to the first shell 100. In this way, when the first shell 100 and the second shell 200 are connected by the welding rib 520, the welding rib 520 on the second shell 200 is in contact and aligned with the corresponding connection position of the first shell 100. After contact and alignment, the welding rib 510 on the second shell 200 forms a surface contact with the first shell 100. During the ultrasonic welding process, the second shell 200 is subjected to high-frequency vibration energy, and the welding rib 520 is in full contact with the first shell 100, generating heat through mutual friction, thereby being welded together.

[0097] In the embodiment of the present application, the welding rib 510 with a triangular cross-section is improved to a welding rib 520 with a trapezoidal cross-section, thereby increasing the contact area between the welding rib 510 and the first shell 100. In this way, the friction area between the welding rib 520 and the first shell 100 can be increased during the welding process, thereby generating greater energy to ensure the reliability of welding.

[0098] Figure 6C for Figure 6B A partial enlarged view of the M in the figure. Figure 6C As shown, the width of the area in the first shell 100 for connecting with the second shell 200 is L1, and the width of the welding rib 520 in contact with the first shell 100 is L2. In order to generate more energy during welding and ensure welding reliability, the width L2 can be designed to be 10%-100% of the width L1.

[0099] The embodiment of the present application may also roughen the outer surface of the welding rib 510 or the welding rib 520 to increase the roughness of the outer surface of the welding rib 510 or the welding rib 520. In this way, the welding rib 510 or the welding rib 520 with increased surface roughness is more conducive to generating heat through mutual friction with the first shell 100, thereby being welded together.

[0100] It should be noted that the present application does not limit the method of surface roughening. For example, a concave-convex texture may be provided on the outer surface of the welding rib 510 or the welding rib 520; or, for another example, concave-convex particles may be provided on the outer surface of the welding rib 510 or the welding rib 520.

[0101] like Figure 5B and 6B As shown, compared with the triangular structure of the welding rib 510, the trapezoidal welding rib 520 increases the interference volume, so that the molten material formed after the welding rib melts is easy to overflow to the surface of the second shell 200, affecting the appearance of the second shell 200. Figure 6BAs shown, the present application sets a glue overflow groove 600 on the second shell 200 along the periphery of the welding rib 520. In this way, the molten material formed after the welding rib 520 is melted will overflow into the glue overflow groove 600, thereby solving the problem of the molten material overflowing due to the increase in the interference volume of the welding rib 520, which affects the appearance of the second shell 200.

[0102] It should be noted that the above embodiment is only illustrative of the welding rib 520 with a trapezoidal cross section, and does not limit the structure of the welding rib 520, as long as the contact area between the welding rib 520 and the first shell 100 is increased. For example, the cross section of the welding rib 520 in the embodiment of the present application can also be rectangular, W-shaped or other regular or irregular shapes.

[0103] In summary, the speaker provided in the embodiment of the present application, in order to meet the weight reduction demand, adds 10-50wt% of hollow sphere material to the raw material components of the first shell 100 and the second shell 200, so that the density of the first shell 100 and the second shell 200 can be reduced, thereby reducing the weight of the first shell 100 and the second shell 200. In addition, in order to be compatible with the different characteristics of a variety of polymer materials, such as crystalline polymer materials and semi-crystalline polymer materials, the embodiment of the present application increases the contact area between the welding ribs and the first shell 100 by changing the shape of the welding ribs. In this way, during the welding process, greater energy can be generated to ensure the reliability of welding. In other words, the speaker provided in the embodiment of the present application can not only meet the weight reduction demand of the speaker, but also ensure the reliability of welding.

[0104] The embodiment of the present application also provides an electronic device, which includes the speaker provided in the embodiment of the present application. The electronic device in the embodiment of the present application can be any terminal device with a speaker, such as a personal computer, a tablet, a mobile phone, a bracelet, a watch, etc.

[0105] In the description of the present application, it should be noted that the terms "upper", "lower", "inside", "outside", "front", "back", "left" and "right" etc. indicate directions or positional relationships based on the directions or positional relationships in the working state of the present application. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present application.

[0106] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0107] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0108] It should be understood that the present application is not limited to the exact construction that has been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof.

[0109] The scope of the present application is limited only by the attached claims.

Claims

1. A loudspeaker, characterized in that: include: A speaker core, a first shell and a second shell, wherein the first shell is provided with welding ribs; The raw material components of the first shell and the second shell containing the welding rib include: a polymer composite material and a hollow sphere material; the polymer composite material includes PA, the mass percentage of PA in the polymer composite material is in the range of 80-100wt%, the particle size of the hollow sphere material is in the range of 2-130μm, the mass percentage of the hollow sphere material in the raw material components is in the range of 10-50wt%, and the mass percentage of the polymer composite material in the raw material components is not less than 50wt%; The welding rib is melted after welding, so that the first shell and the second shell are connected, and a glue overflow groove is provided on one side of the welding rib, and the glue overflow groove is used to accommodate the molten material overflowing after being melted; The speaker core is arranged between the first shell and the second shell; The speaker core is adhesively connected to the first shell so that one side of the speaker core has a front cavity, the first shell is provided with a sound outlet channel, the sound outlet channel is connected to the front cavity, the speaker core is used to promote the air in the front cavity to vibrate, and the vibrating air in the front cavity is discharged through the sound outlet channel; the first shell, the second shell, and the speaker core are welded so that the other side of the speaker core has a rear cavity, which is a sealed cavity.

2. The loudspeaker according to claim 1, characterized in that The mass percentage of the polymer composite material to the raw material components is in the range of 50-90wt%.

3. The loudspeaker according to claim 2, characterized in that The mass percentage of the polymer composite material to the raw material components is one of 60 wt %, 65 wt %, 70 wt %, 75 wt %, 80 wt %, and 85 wt %.

4. The loudspeaker according to claim 2 or 3, characterized in that: The mass percentage of the hollow sphere material in the raw material component is one of 15wt%, 20wt%, 25wt%, 30wt%, 35wt%, and 40wt%.

5. The loudspeaker according to claim 1 or 2, characterized in that: The mass percentage of the PA in the raw material components is 77wt%, and the mass percentage of the hollow sphere material in the raw material components is 20wt%.

6. The loudspeaker according to claim 1 or 2, characterized in that: The mass percentage of the PA in the raw material components is 40wt%, and the mass percentage of the hollow sphere material in the raw material components is 50wt%.

7. The loudspeaker according to claim 1 or 2, characterized in that: The mass percentage of the PA in the raw material components is 81wt%, and the mass percentage of the hollow sphere material in the raw material components is 10wt%.

8. The loudspeaker according to claim 1 or 2, characterized in that: The hollow sphere material includes silicon dioxide.

9. The loudspeaker according to claim 8, characterized in that The density of the hollow sphere material is in the range of 0.2-0.6 g / cm 3 .

10. The loudspeaker according to claim 1, characterized in that The glue overflow groove is located at a side of the welding rib away from the speaker core.

11. The loudspeaker according to claim 1 or 2, characterized in that: The polymer composite material also includes fiber material.

12. The loudspeaker according to claim 11, characterized in that The fiber material includes at least one of glass fiber, aramid fiber, carbon fiber, silicon carbide, and carbon nanotube.

13. The loudspeaker according to claim 1 or 10, characterized in that: The cross section of the welding rib is trapezoidal, rectangular or W-shaped.

14. A loudspeaker, characterized in that: include: A speaker core, a first shell and a second shell, wherein the second shell is provided with welding ribs; The raw material components of the first shell and the second shell including the welding rib include: a polymer composite material and a hollow sphere material; the polymer composite material includes PA, the mass percentage of PA in the polymer composite material is in the range of 80-100wt%, the particle size of the hollow sphere material is in the range of 2-130μm, the mass percentage of the hollow sphere material in the raw material components is in the range of 10-50wt%, and the mass percentage of the polymer composite material in the raw material components is not less than 50wt%; The welding rib is melted after welding, so that the first shell and the second shell are connected, and a glue overflow groove is provided on one side of the welding rib, and the glue overflow groove is used to accommodate the molten material overflowing after being melted; The speaker core is arranged between the first shell and the second shell; The speaker core is adhesively connected to the first shell so that one side of the speaker core has a front cavity, the first shell is provided with a sound outlet channel, the sound outlet channel is connected to the front cavity, the speaker core is used to promote the air in the front cavity to vibrate, and the vibrating air in the front cavity is discharged through the sound outlet channel; the first shell, the second shell, and the speaker core are welded so that the other side of the speaker core has a rear cavity, which is a sealed cavity.

15. The loudspeaker according to claim 14, characterized in that The mass percentage of the polymer composite material to the raw material components is in the range of 50-90wt%.

16. The loudspeaker according to claim 15, characterized in that The mass percentage of the polymer composite material to the raw material components is one of 60 wt %, 65 wt %, 70 wt %, 75 wt %, 80 wt %, and 85 wt %.

17. The loudspeaker according to claim 15 or 16, characterized in that: The mass percentage of the hollow sphere material in the raw material component is one of 15wt%, 20wt%, 25wt%, 30wt%, 35wt%, and 40wt%.

18. The loudspeaker according to claim 14 or 15, characterized in that: The mass percentage of the PA in the raw material components is 77wt%, and the mass percentage of the hollow sphere material in the raw material components is 20wt%.

19. The loudspeaker according to claim 14 or 15, characterized in that: The mass percentage of the PA in the raw material components is 40wt%, and the mass percentage of the hollow sphere material in the raw material components is 50wt%.

20. The loudspeaker according to claim 14 or 15, characterized in that The mass percentage of the PA in the raw material components is 81wt%, and the mass percentage of the hollow sphere material in the raw material components is 10wt%.

21. The loudspeaker according to claim 14 or 15, characterized in that The hollow sphere material includes silicon dioxide.

22. The loudspeaker according to claim 21, characterized in that The density of the hollow sphere material is in the range of 0.2-0.6 g / cm 3 .

23. The loudspeaker according to claim 14, characterized in that The glue overflow groove is located at a side of the welding rib away from the speaker core.

24. The loudspeaker according to claim 14 or 15, characterized in that The polymer composite material also includes fiber material.

25. The loudspeaker according to claim 24, characterized in that The fiber material includes at least one of glass fiber, aramid fiber, carbon fiber, silicon carbide, and carbon nanotube.

26. The loudspeaker according to claim 14 or 23, characterized in that The cross section of the welding rib is trapezoidal, rectangular or W-shaped.

27. An electronic device, characterized in that: The electronic device comprises a speaker as described in any one of claims 1-26.

28. The electronic device according to claim 27, characterized in that: The electronic device is one of a personal computer, a tablet, and a mobile phone.

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